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中山DIN 7349 带重型夹紧套的螺栓用平垫圈（重型平垫）
DIN 7349 
*All measurements in millimeters (mm)*
| d |
for spring pins DIN 1481 |
for screws | s | d1 |
| 3.2 | 6 | M3 | 1 | 9 |
| 4.3 | 8 | M4 | 1.6 | 12 |
| 5.3 | 10 | M5 | 2 | 15 |
| 6.4 | 12 | M6 | 3 | 17 |
| 8.4 | 16 | M8 | 4 | 21 |
| 10.5 | 18 | M10 | 4 | 25 |
| 13 | 21 | M12 | 6 | 30 |
| 15 | 25 | M14 | 6 | 36 |
| 17 | 28 | M16 | 6 | 40 |
| 21 | 35 | M20 | 8 | 44 |
| 23 | 38 | M22 | 8 | 50 |
| 25 | 40 | M24 | 10 | 50 |
| 31 | 50 | M30 | 10 | 68 |
All information is strictly informative